Solid-liquid separation integrated treatment device for landfill leachate

Abstract

The invention relates to the technical field of garbage treatment devices, in particular to a garbage leachate solid-liquid separation integrated treatment device which comprises two symmetrically-arranged supporting blocks, a disc is rotationally connected to the center of each supporting block, a rotating shaft is fixedly connected to the center of each disc, and one end of each rotating shaft is fixedly connected with a rotating block. An extrusion mechanism is arranged at the upper ends of the rotating blocks and comprises a first filter plate, an expansion mechanism is arranged at one end of the disc, dredging mechanisms are arranged in the rotating blocks, a filter mechanism is arranged at the center of the two rotating blocks, and a deslagging mechanism is arranged at one end of the disc; meshes of a first filter plate and meshes of a second filter plate are arranged in a staggered manner, so that pores of the first filter plate when the first filter plate extrudes garbage can be reduced, and the first filter plate at the upper end of a rotating block drives the meshes of the first filter plate at the lower end of the rotating block to be enlarged while the first filter plate extrudes the garbage at the upper end of the rotating block; and meanwhile, air in the corrugated pipe can be driven to be sprayed out from small holes, and impurities clamped by meshes of the first filter plate are cleaned.

Description

Technical Field

[0001] This invention relates to the field of waste treatment equipment technology, specifically to an integrated solid-liquid separation treatment device for landfill leachate. Background Technology

[0002] The integrated solid-liquid separation treatment device for landfill leachate is an integrated and modular wastewater treatment equipment specifically designed for high-concentration organic wastewater (i.e., leachate) generated from landfills, transfer stations, or food waste treatment plants. Its core function is to efficiently remove suspended solids, heavy metals, organic matter, and ammonia nitrogen from the leachate through solid-liquid separation and multi-stage purification technology, ultimately achieving compliant discharge or resource utilization of the wastewater. Landfill leachate is a high-concentration wastewater formed during the stacking, landfilling, or incineration of waste due to precipitation, surface water infiltration, and the fermentation of the waste itself and the decomposition of organic matter by microorganisms. For example, food waste has a high water content and releases a large amount of water during stacking. Rainfall, snowfall, surface runoff, and groundwater form leachate through the waste layer, and organic matter in the waste decomposes under the action of microorganisms to produce water.

[0003] Existing integrated solid-liquid separation treatment devices for landfill leachate have the following specific drawbacks regarding filter clogging: Landfill leachate contains a large amount of suspended particulate matter, such as soil, small stones, and debris from waste decomposition. These particles, like flour, easily accumulate on the filter screen, eventually clogging the mesh. Furthermore, existing filter screens may be poorly designed, with unsuitable mesh sizes—either too large to catch small particles or too small to cause clogging. The backwashing system may also be ineffective, leaving unremoved waste deposited on the filter screen. Additionally, pretreatment of the leachate before filtration is necessary to remove larger particles and contaminants. However, if pretreatment technology is inadequate, these contaminants will directly reach the filter screen, further burdening it. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides an integrated solid-liquid separation treatment device for landfill leachate.

[0005] The technical solution adopted by this invention to solve its technical problem is: an integrated solid-liquid separation treatment device for landfill leachate, comprising two symmetrically arranged support blocks, a disc rotatably connected to the center of each support block, a rotating shaft fixedly connected to the center of each disc, a rotating block fixedly connected to one end of each rotating shaft, a squeezing mechanism for squeezing the waste at the upper end of each rotating block, the squeezing mechanism including a first filter plate, an expansion mechanism for expanding the mesh of the first filter plate at one end of each disc, a dredging mechanism for cleaning the mesh of the first filter plate inside each rotating block, a filtration mechanism for further filtering the leachate at the center of the two rotating blocks, and a slag discharge mechanism for discharging the waste squeezed from the upper end of the first filter plate at one end of each disc.

[0006] Preferably, the rotating block has small holes inside.

[0007] Preferably, the extrusion mechanism includes a hydraulic cylinder, the non-output end of which is fixedly connected to a support block; a rack is fixedly connected to the output end of the hydraulic cylinder, a fixing block is fixedly connected to the surface of the rack, a sleeve is fitted to the surface of the fixing block, a first steel wire rope is slidably connected inside the sleeve, a baffle is fixedly connected to one end of the first steel wire rope, the baffle is slidably connected to the disc, a first deflection wheel is fitted to the surface of the first steel wire rope, the first deflection wheel is rotatably connected to the disc, and a first sliding block is fixedly connected to one end of the first steel wire rope, the first sliding block is slidably connected to the disc.

[0008] Preferably, the extrusion mechanism further includes a first filter plate, one end of the first sliding block is fixedly connected to the first filter plate, one end of the first filter plate is fixedly connected to a rotating rod, the rotating rod is elastically rotatably connected to the disc through a torsion spring, and a rubber block is fixedly connected to the surface of the first filter plate.

[0009] Preferably, the expansion mechanism includes a first movable plate, which is fixedly connected to the baffle. A first connecting block is fixedly connected to the surface of the first movable plate. A tension spring is fixedly connected to one end of the first connecting block. A second steel wire rope is fixedly connected to the upper end of the tension spring. A second deflection wheel is attached to the surface of the second steel wire rope. A second sliding block is fixedly connected to one end of the second steel wire rope. A second connecting block is attached to the surface of the second sliding block.

[0010] Preferably, the expansion mechanism includes a second filter plate, one end of the second connecting block is fixedly connected to the second filter plate, the second filter plate and the first filter plate are slidably connected by a spring, and the second filter plate and the first filter plate are tightly fitted together.

[0011] Preferably, the unblocking mechanism includes a corrugated pipe, the upper end of which is fixedly connected to the first movable plate, an air inlet pipe is fixedly connected to the upper end of the corrugated pipe, a first one-way valve is provided inside the air inlet pipe, a fixed plate is fixedly connected to the lower end of the corrugated pipe, an air outlet pipe is fixedly connected to the lower end of the corrugated pipe, and a second one-way valve is fixedly connected inside the air outlet pipe.

[0012] Preferably, the filtration mechanism includes a lower pressure plate that is tightly fitted to the second filter plate. An arc-shaped plate is fixedly connected to the upper end of the lower pressure plate, a protrusion is fixedly connected to the upper end of the lower pressure plate, and a third sliding block is fixedly connected to the lower end of the lower pressure plate.

[0013] Preferably, the filtration mechanism further includes a second movable plate, the lower end of the third sliding block is fixedly connected to the second movable plate, the upper end of the second movable plate is fixedly connected to a top rod, and a water outlet pipe is sleeved on the outside of the second movable plate.

[0014] Preferably, the slag discharge mechanism includes a ratchet, which meshes with the rack, and a pawl meshes with one end of the ratchet. The pawl is elastically connected to the support block via a torsion spring.

[0015] The beneficial effects of this invention are: (1) The integrated solid-liquid separation treatment device for landfill leachate described in this invention can squeeze the landfill through the first filter plate. A rubber block is provided at the upper end of the first filter plate. The rubber block can block the first filter plate and the rotating block, so that the landfill and liquid will not splash during the squeezing process, thereby improving the squeezing effect. At the same time, the rubber block can also play a buffering role.

[0016] (2) The integrated solid-liquid separation treatment device for landfill leachate described in this invention has a second filter plate attached to the surface of the first filter plate. In the initial state, the mesh of the first filter plate and the second filter plate are misaligned, which can reduce the porosity of the first filter plate when squeezing the landfill and prevent larger impurities from passing through the first filter plate. When the first filter plate at the top of the rotating block squeezes the landfill, the hydraulic cylinder will also drive the mesh of the first filter plate at the bottom of the rotating block to overlap with that of the second filter plate. The overlap of the mesh of the first filter plate and the second filter plate increases the mesh size of the first filter plate. The increased mesh size of the first filter plate can cause the landfill blocked in the mesh of the first filter plate to fall off under the action of gravity.

[0017] (3) The integrated solid-liquid separation treatment device for landfill leachate described in this invention has a structure in which the air inside the bellows is ejected from the small hole while the hydraulic cylinder moves downward. The compressed gas ejected from the small hole can clean the impurities stuck in the mesh of the first filter plate.

[0018] (4) The integrated solid-liquid separation treatment device for landfill leachate described in this invention adopts a water outlet pipe, which is similar to an ellipse. The upper end of the water outlet pipe is horizontal, and several small mesh holes are opened inside the water outlet pipe. The small mesh holes inside the water outlet pipe can further filter the squeezed water. The water that has been further filtered through the small mesh holes inside the water outlet pipe will enter the water outlet pipe. Finally, the water after solid-liquid separation is discharged from the device through the water outlet pipe. While the first filter plate squeezes the garbage, the small mesh holes inside the water outlet pipe are opened.

[0019] (5) The integrated solid-liquid separation treatment device for landfill leachate described in this invention has a structure in which, when the hydraulic cylinder moves upward to reset, the disc will drive the two rotating blocks to rotate half a turn. The two rotating blocks rotating half a turn can rotate the residue on the upper first filter plate to the lower end, so that the residue falls off the equipment under the action of gravity. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the support block structure Figure 3 This is a schematic diagram of a rack and pinion structure; Figure 4 for Figure 3 The diagram shows an enlarged view of part A. Figure 5 A schematic diagram of the connection structure between the first steel wire rope and the first sliding block; Figure 6 This is a schematic diagram of the connection structure between the second sliding block and the second connecting block; Figure 7 This is a schematic diagram of the connection structure between the first filter plate and the rubber block; Figure 8 This is a schematic diagram of the connection structure between the first connecting block and the tension spring; Figure 9 This is a schematic diagram of the small hole structure; Figure 10 This is a schematic diagram of a bellows structure; Figure 11 This is a schematic diagram of the connection structure between the lower pressure plate and the protrusion block; Figure 12 Schematic diagram of the second movable plate structure Figure 13 This is a schematic diagram of the third sliding block structure.

[0022] In the diagram: 100, support block; 200, disc; 201, rotating shaft; 202, rotating block; 2021, small hole; 300, extrusion mechanism; 301, hydraulic cylinder; 302, rack; 303, fixing block; 304, sleeve; 305, first wire rope; 306, baffle; 307, first deflection wheel; 308, first sliding block; 309, first filter plate; 310, rotating rod; 311, rubber block; 400, expansion mechanism; 401, first movable plate; 402, first connecting block; 403, tension spring; 404, second wire rope; 40 5. Second deflector wheel; 406. Second sliding block; 407. Second connecting block; 408. Second filter plate; 500. Unblocking mechanism; 501. Corrugated pipe; 502. Air inlet pipe; 503. First one-way valve; 504. Fixed plate; 505. Air outlet pipe; 506. Second one-way valve; 600. Filtering mechanism; 601. Lower pressure plate; 602. Arc plate; 603. Protrusion block; 604. Third sliding block; 605. Second movable plate; 606. Top rod; 607. Water outlet pipe; 700. Slag discharge mechanism; 701. Ratchet; 702. Pad. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1-13 As shown, the present invention discloses an integrated solid-liquid separation treatment device for landfill leachate, comprising two symmetrically arranged support blocks 100. A disc 200 is rotatably connected to the center of each support block 100, and a rotating shaft 201 is fixedly connected to the center of the disc 200. A rotating block 202 is fixedly connected to one end of the rotating shaft 201. A squeezing mechanism 300 for squeezing the waste is provided at the upper end of the rotating block 202. The squeezing mechanism 300 includes a first filter plate 309. An expansion mechanism 400 for expanding the mesh of the first filter plate 309 is provided at one end of the disc 200. A dredging mechanism 500 for cleaning the mesh of the first filter plate 309 is provided inside the rotating block 202. A filtration mechanism 600 for further filtering the leachate is provided at the center of the two rotating blocks 202. A slag discharge mechanism 700 for discharging the waste squeezed from the upper end of the first filter plate 309 is provided at one end of the disc 200.

[0025] Specifically, the rotating block 202 has a small hole 2021 inside.

[0026] Additionally, the extrusion mechanism 300 includes a hydraulic cylinder 301, the non-output end of which is fixedly connected to the support block 100; a rack 302 is fixedly connected to the output end of the hydraulic cylinder 301, a fixing block 303 is fixedly connected to the surface of the rack 302, a sleeve 304 is fitted to the surface of the fixing block 303, a first steel wire rope 305 is slidably connected inside the sleeve 304, a baffle 306 is fixedly connected to one end of the first steel wire rope 305, the baffle 306 is slidably connected to the disc 200, a first deflection wheel 307 is fitted to the surface of the first steel wire rope 305, the first deflection wheel 307 is rotatably connected to the disc 200, and a first sliding block 308 is fixedly connected to one end of the first steel wire rope 305, the first sliding block 308 sliding with the disc 200. The connection is as follows: one end of the first sliding block 308 is fixedly connected to the first filter plate 309, and one end of the first filter plate 309 is fixedly connected to the rotating rod 310. The rotating rod 310 is elastically rotatably connected to the disc 200 through a torsion spring. A rubber block 311 is fixedly connected to the surface of the first filter plate 309. The waste to be processed is poured in from the top of the two support blocks 100. The waste to be processed will fall on the upper end of the first filter plate 309 after passing through the support blocks 100. The hydraulic cylinder 301 is activated to move downward. The downward movement of the hydraulic cylinder 301 will drive the rack 302 to move downward. The downward movement of the rack 302 will drive the fixed block 303 to move downward. The downward movement of the fixed block 303 will drive the baffle 306 to move downward. The downward movement of the baffle 306 will drive the first steel wire rope 305 to move downward. An external sleeve 304 is provided, which limits the first wire rope 305. The first wire rope 305 is deflected by the first deflector wheel 307. The downward movement of the first wire rope 305 will drive the first sliding block 308 to move to one end. The movement of the first sliding block 308 to one end will drive the first filter plate 309 to move to one end. The movement of the first filter plate 309 to one end will drive the rotating rod 310 to rotate. The first filter plate 309 rotates around the rotating rod 310 and fits against the support block 100. When the first filter plate 309 rotates around the rotating rod 310, it will squeeze the garbage.

[0027] Specifically, the rubber block 311 at the upper end of the first filter plate 309 acts as a barrier. Made of elastic rubber, the semi-circular rubber block 311 prevents waste and liquid from splashing during the squeezing process. It also acts as a buffer, extending the equipment's lifespan. Liquid from the waste passes through the first filter plate 309 and the second filter plate 408, entering the center of the two rotating blocks 202. The lower pressure plate 601 has a large opening, allowing water from the center of the two rotating blocks 202 to pass through the lower pressure plate 601 and reach the outlet pipe 60. At the upper end of 7, the water outlet pipe 607 is elliptical in shape and horizontal at the top. Several small mesh holes are opened inside the water outlet pipe 607. The small mesh holes inside the water outlet pipe 607 can further filter the squeezed water. The water that has been further filtered by the small mesh holes inside the water outlet pipe 607 will enter the water outlet pipe 607. Finally, the water after solid-liquid separation will be discharged from the equipment through the water outlet pipe 607. In the initial state, the small mesh holes inside the water outlet pipe 607 are blocked by the push rod 606. When the first filter plate 309 squeezes the waste, the push rod 606 will move away from the small mesh holes inside the water outlet pipe 607. At this time, the small mesh holes inside the water outlet pipe 607 are opened. That is, the small mesh holes inside the water outlet pipe 607 are opened when the first filter plate 309 squeezes the waste.

[0028] Furthermore, the first filter plate 309 can compress the garbage. A rubber block 311 is provided on the upper end of the first filter plate 309. The rubber block 311 can block the first filter plate 309 and the rotating block 202, so that the garbage and liquid in the compression will not splash during the compression process, thereby improving the compression effect of the garbage. At the same time, the rubber block 311 can also play a buffering role.

[0029] Further, the expansion mechanism 400 includes a first movable plate 401, which is fixedly connected to the baffle 306. A first connecting block 402 is fixedly connected to the surface of the first movable plate 401. A tension spring 403 is fixedly connected to one end of the first connecting block 402. A second steel wire rope 404 is fixedly connected to the upper end of the tension spring 403. A second deflection wheel 405 is attached to the surface of the second steel wire rope 404. A second sliding block 406 is fixedly connected to one end of the second steel wire rope 404. A second connecting block 407 is attached to the surface of the first filter plate 309. A second filter plate 408 is fixedly connected to one end of the second connecting block 407. The second filter plate 408 is slidably connected to the first filter plate 309 via a spring, and the second filter plate 408 is tightly fitted to the first filter plate 309. The second filter plate 408 is attached to the surface of the first filter plate 309. The mesh sizes of the first filter plate 309 and the second filter plate 408 are the same. Initially, the mesh sizes of the first filter plate 309 and the second filter plate 408 are misaligned, which can reduce... The small first filter plate 309 has pores that prevent larger impurities from passing through when squeezing the waste. As the baffle 306 moves downwards, it drives the first movable plate 401 downwards. This downward movement of the first movable plate 401 drives the first connecting block 402 downwards, which in turn drives the tension spring 403 downwards. The tension spring 403 then drives the second wire rope 404 downwards. The second wire rope 404 is deflected and redirected by multiple second deflecting wheels 402. The downward movement will cause the second sliding block 406 to move upward, which in turn will cause the second connecting block 407 to move upward, which will in turn cause the second filter plate 408 to move upward. The upward movement of the second filter plate 408 will compress the spring between the second filter plate 408 and the first filter plate 309. The upward movement of the second filter plate 408 will enlarge the mesh of the first filter plate 309. The enlarged mesh of the first filter plate 309 can promote slag discharge and cause the impurities clogging the mesh of the first filter plate 309 to fall off.

[0030] It is worth mentioning that by attaching the second filter plate 408 to the surface of the first filter plate 309, the mesh of the first filter plate 309 and the second filter plate 408 is misaligned in the initial state. This reduces the porosity of the first filter plate 309 when it squeezes the garbage, preventing larger impurities from passing through the first filter plate 309. When the first filter plate 309 at the upper end of the rotating block 202 squeezes the garbage, the hydraulic cylinder 301 will also drive the first filter plate 309 at the lower end of the rotating block 202 to overlap with the mesh of the second filter plate 408. The overlap of the mesh of the first filter plate 309 and the second filter plate 408 increases the size of the mesh of the first filter plate 309. The increased size of the mesh of the first filter plate 309 allows the garbage blocking the mesh of the first filter plate 309 to fall off under the action of gravity.

[0031] Furthermore, the unblocking mechanism 500 includes a bellows 501, the upper end of which is fixedly connected to the first movable plate 401. An air inlet pipe 502 is fixedly connected to the upper end of the bellows 501, and a first one-way valve 503 is installed inside the air inlet pipe 502. A fixed plate 504 is fixedly connected to the lower end of the bellows 501, and an air outlet pipe 505 is fixedly connected to the lower end of the bellows 501. A second one-way valve 506 is fixedly connected inside the air outlet pipe 505. As the first movable plate 401 moves downward, it drives the bellows 501 downward. The air inlet pipe 502 at the upper end of the bellows 501 is used to draw air into the bellows 501. The first one-way valve 503 inside the intake pipe 502 controls the unidirectional flow of gas within the intake pipe 502, allowing only outside air to enter the bellows 501 through the intake pipe 502. The lower end of the bellows 501 is provided with an exhaust pipe 505, inside which is a second one-way valve 506. The second one-way valve 506 controls the airflow to be discharged only from the bellows 501. When the bellows 501 moves downward, it compresses the air inside, and the air inside the bellows 501 is discharged from the exhaust pipe 505, which then enters the small hole 2021 inside the rotating block 202.

[0032] Furthermore, air from the small holes 2021 cleans the mesh of the first filter plate 309 and the second filter plate 408. The pores of the small holes 2021 are very small, and several small holes 2021 are aligned with the mesh of the first filter plate 309. Therefore, the compressed gas ejected from the small holes 2021 can clean the impurities stuck in the mesh of the first filter plate 309. Through the structure, when the hydraulic cylinder 301 moves downward, it also drives the air inside the bellows 501 to be ejected from the small holes 2021. The compressed gas ejected from the small holes 2021 can clean the impurities stuck in the mesh of the first filter plate 309.

[0033] Specifically, the filtration mechanism 600 includes a lower pressure plate 601, which is tightly fitted with the second filter plate 408. An arc-shaped plate 602 is fixedly connected to the upper end of the lower pressure plate 601, a protrusion 603 is fixedly connected to the upper end of the lower pressure plate 601, a third sliding block 604 is fixedly connected to the lower end of the lower pressure plate 601, a second movable plate 605 is fixedly connected to the lower end of the third sliding block 604, a top rod 606 is fixedly connected to the upper end of the second movable plate 605, and a water outlet pipe 607 is sleeved on the outside of the second movable plate 605.

[0034] Additionally, as the second filter plate 408 rotates around the rotating rod 310 along with the first filter plate 309, it causes the protrusion 603 to move downwards. This downward movement of the protrusion 603 causes the lower pressure plate 601 to move downwards. The downward movement of the lower pressure plate 601 stretches the arc-shaped plate 602, which is made of spring steel and has a certain degree of elasticity. The downward movement of the lower pressure plate 601 causes the third sliding block 604 to move downwards. The downward movement of the third sliding block 604 moves away from the mesh on the outlet pipe 607. When the first filter plate 309 releases its pressure on the waste and resets, the arc-shaped plate 602 resets under the action of elasticity. The upward movement of the reset arc-shaped plate 602 causes the lower pressure plate 601 to reset and move upwards. The movement of the second movable plate 605 causes it to move upward, which in turn causes the top rod 606 to move upward. The upward movement of the top rod 606 clears the mesh holes of the water outlet pipe 607. The water outlet pipe 607 is elliptical in shape, with its upper end horizontal. Several small mesh holes are opened inside the water outlet pipe 607. These small mesh holes can further filter the squeezed water. The water that has been further filtered by the small mesh holes inside the water outlet pipe 607 will enter the water outlet pipe 607. Finally, the water after solid-liquid separation will be discharged from the equipment through the water outlet pipe 607. While the first filter plate 309 is squeezing the waste, the small mesh holes inside the water outlet pipe 607 are opened.

[0035] Specifically, the slag discharge mechanism 700 includes a ratchet 701, which meshes with the rack 302. A pawl 702 engages at one end of the ratchet 701, and the pawl 702 is elastically connected to the support block 100 via a torsion spring. When the rack 302 moves upward, resetting the first filter plate 309, it also causes the ratchet 701 to rotate half a turn. The pawl 702, engaging at one end of the ratchet 701, limits the ratchet 701, allowing it to rotate only in one direction. A half-turn rotation of the ratchet 701 causes the rotating shaft 201 to rotate half a turn. The shaft 201 is hollow inside. Rotating the shaft 201 half a turn will drive the disc 200 to rotate half a turn. Rotating the disc 200 half a turn will drive the two rotating blocks 202 to rotate half a turn. Rotating the two rotating blocks 202 half a turn will cause the residue after solid-liquid separation at the upper end to be discharged from the lower end. Through the structure, when the hydraulic cylinder 301 moves upward to reset, the disc 200 will drive the two rotating blocks 202 to rotate half a turn. Rotating the two rotating blocks 202 half a turn can rotate the residue on the upper first filter plate 309 to the lower end, so that the residue falls off and is discharged from the equipment under the action of gravity.

[0036] Working principle: In use, the waste to be processed is first poured into the top of the two support blocks 100. The waste passes through the support blocks 100 and falls onto the upper end of the first filter plate 309. The hydraulic cylinder 301 is then activated to move downwards. This downward movement of the hydraulic cylinder 301 drives the rack 302 downwards, which in turn drives the fixing block 303 downwards. The downward movement of the fixing block 303 drives the baffle 306 downwards, which in turn drives the first steel wire rope 305 downwards. An external sleeve 304 is fitted, which limits the movement of the first wire rope 305. The first wire rope 305 is deflected by the first deflector wheel 307. The downward movement of the first wire rope 305 causes the first sliding block 308 to move to one end. The movement of the first sliding block 308 to one end causes the first filter plate 309 to move to one end. The movement of the first filter plate 309 to one end causes the rotating rod 310 to rotate. The first filter plate 309 rotates around the rotating rod 310 and comes into contact with the support block 100. When the rotating rod 310 rotates, it squeezes the waste. The rubber block 311 at the upper end of the first filter plate 309 acts as a barrier. The rubber block 311 is made of rubber and has good elasticity. The rubber block 311 is semi-circular and can block the first filter plate 309 and the rotating block 202, preventing the waste and liquid from splashing during the squeezing process. At the same time, the rubber block 311 also acts as a buffer, improving the service life of the equipment. The liquid in the waste will then pass through the first filter. Water passing through the first filter plate 309 and the second filter plate 408 enters the center of the two rotating blocks 202. The lower pressure plate 601 has a large opening, allowing water at the center of the two rotating blocks 202 to pass through it and reach the upper end of the outlet pipe 607. The outlet pipe 607 is approximately elliptical in shape, with its upper end horizontal. Several small mesh openings are provided inside the outlet pipe 607, allowing for further filtration of the squeezed water. Water further filtered by the fine mesh inside the outlet pipe 607 enters the outlet pipe 607. Finally, the water after solid-liquid separation is discharged from the equipment through the outlet pipe 607. Initially, the fine mesh inside the outlet pipe 607 is blocked by the push rod 606. When the first filter plate 309 squeezes the waste, the push rod 606 moves away from the fine mesh inside the outlet pipe 607. At this time, the fine mesh inside the outlet pipe 607 is opened. That is, the fine mesh inside the outlet pipe 607 is opened when the first filter plate 309 squeezes the waste.The first filter plate 309 can compress the waste. A rubber block 311 is provided on the upper end of the first filter plate 309. The rubber block 311 can block the first filter plate 309 and the rotating block 202, so that the waste and liquid during compression will not splash, thus improving the compression effect. At the same time, the rubber block 311 can also act as a buffer.

[0037] A second filter plate 408 is attached to the surface of the first filter plate 309. The mesh sizes of the first filter plate 309 and the second filter plate 408 are the same. Initially, the mesh sizes of the first filter plate 309 and the second filter plate 408 are misaligned. This reduces the porosity of the first filter plate 309 when it squeezes the waste, preventing larger impurities from passing through. When the baffle 306 moves downward, it drives the first movable plate 401 to move downward. The downward movement of the first movable plate 401 drives the first connecting block. The downward movement of the first connecting block 402 causes the tension spring 403 to move downwards. The downward movement of the tension spring 403 causes the second wire rope 404 to move downwards. The second wire rope 404 passes through multiple second deflection wheels 402 for deflection and reorientation. The downward movement of the second wire rope 404 causes the second sliding block 406 to move upwards. The upward movement of the second sliding block 406 causes the second connecting block 407 to move upwards. The upward movement of the second connecting block 407 causes the second filter plate 408 to move upwards. The upward movement of filter plate 408 compresses the spring between the second filter plate 408 and the first filter plate 309. This upward movement of the second filter plate 408 enlarges the mesh size of the first filter plate 309, promoting slag discharge and dislodging impurities clogging the mesh. Because the second filter plate 408 is attached to the surface of the first filter plate 309, and initially the mesh sizes of the first and second filter plates 309 are misaligned, this reduces the impact on the first filter plate 309's ability to filter waste. The pores during compression prevent larger impurities from passing through the first filter plate 309. When the first filter plate 309 at the upper end of the rotating block 202 compresses the waste, the hydraulic cylinder 301 will also drive the first filter plate 309 at the lower end of the rotating block 202 to overlap with the mesh of the second filter plate 408. The overlap of the mesh of the first filter plate 309 and the second filter plate 408 increases the mesh size of the first filter plate 309. The increased mesh size of the first filter plate 309 allows the waste blocking the mesh of the first filter plate 309 to fall off under the action of gravity.

[0038] As the first movable plate 401 moves downward, it also drives the bellows 501 downward. An air inlet pipe 502 is located at the upper end of the bellows 501 to draw in air. A first one-way valve 503 inside the air inlet pipe 502 controls the unidirectional flow of gas within it, allowing only outside air to enter the bellows 501. An air outlet pipe 505 is located at the lower end of the bellows 501, and a second one-way valve 506 inside it controls the airflow to exit only from the bellows 501. The downward movement of the bellows 501 compresses the air inside, causing it to exit through the air outlet pipe 505 and into the small hole 2021 inside the rotating block 202. Air from the small holes 2021 cleans the mesh of the first filter plate 309 and the second filter plate 408. The pores of the small holes 2021 are very small, and several small holes 2021 are aligned with the mesh of the first filter plate 309. Therefore, the compressed gas ejected from the small holes 2021 can clean the impurities stuck in the mesh of the first filter plate 309. Through the structure, when the hydraulic cylinder 301 moves downward, it also drives the air inside the bellows 501 to be ejected from the small holes 2021. The compressed gas ejected from the small holes 2021 can clean the impurities stuck in the mesh of the first filter plate 309.

[0039] As the second filter plate 408 rotates around the rotating rod 310 along with the first filter plate 309, it causes the protrusion 603 to move downwards. The downward movement of the protrusion 603 causes the lower pressure plate 601 to move downwards. The downward movement of the lower pressure plate 601 stretches the arc plate 602. The arc plate 602 is made of spring steel and has a certain degree of elasticity. The downward movement of the lower pressure plate 601 causes the third sliding block 604 to move downwards. The downward movement of the third sliding block 604 moves away from the mesh on the water outlet pipe 607. When the first filter plate 309 releases its pressure on the garbage and resets, the arc plate 602 will reset under the action of elasticity. The reset upward movement of the arc plate 602 will drive the lower pressure plate 601 to move downwards. When the lower pressure plate 601 resets and moves upward, it drives the second movable plate 605 to move upward. The upward movement of the second movable plate 605 drives the top rod 606 to move upward. The upward movement of the top rod 606 clears the mesh holes of the water outlet pipe 607. The water outlet pipe 607 is elliptical in shape, with its upper end horizontal. Several small mesh holes are opened inside the water outlet pipe 607. These small mesh holes can further filter the squeezed water. The water that has been further filtered by the small mesh holes inside the water outlet pipe 607 enters the water outlet pipe 607. Finally, the water after solid-liquid separation is discharged from the equipment through the water outlet pipe 607. While the first filter plate 309 squeezes the waste, the small mesh holes inside the water outlet pipe 607 are opened.

[0040] As the rack 302 moves upward, resetting the first filter plate 309, it also drives the ratchet 701 to rotate half a turn. One end of the ratchet 701 is engaged with a pawl 702, which limits the ratchet 701, allowing it to rotate only in one direction. The half-turn rotation of the ratchet 701 drives the rotating shaft 201 to rotate half a turn. The rotating shaft 201 is hollow inside. The half-turn rotation of the rotating shaft 201 drives the disc 200 to rotate half a turn. The half-turn rotation of the disc 200 drives the two rotating blocks 202 to rotate half a turn. The half-turn rotation of the two rotating blocks 202 causes the solid-liquid separation residue at the upper end to be discharged from the lower end. Through the designed structure, when the hydraulic cylinder 301 moves upward to reset, the disc 200 drives the two rotating blocks 202 to rotate half a turn. The half-turn rotation of the two rotating blocks 202 can rotate the residue on the upper first filter plate 309 to the lower end, causing the residue to fall and be discharged from the equipment under the action of gravity.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for integrated solid-liquid separation treatment of landfill leachate, comprising two symmetrically arranged support blocks (100), characterized in that: The center of the supporting block (100) is rotationally connected with a disc (200), the center of the disc (200) is fixedly connected with a rotating shaft (201), one end of the rotating shaft (201) is fixedly connected with a rotating block (202), the upper end of the rotating block (202) is provided with an extrusion mechanism (300) for extruding garbage, the extrusion mechanism (300) comprises a first filter plate (309), one end of the disc (200) is provided with an expansion mechanism (400) for expanding the mesh of the first filter plate (309), the inside of the rotating block (202) is provided with a dredging mechanism (500) for cleaning the mesh of the first filter plate (309), the center of the two rotating blocks (202) is provided with a filtering mechanism (600) for further filtering leachate, and one end of the disc (200) is provided with a deslagging mechanism (700) for discharging the garbage extruded on the upper end of the first filter plate (309).

2. The integrated solid-liquid separation device for landfill leachate treatment according to claim 1, characterized in that: The inside of the rotating block (202) is provided with a small hole (2021).

3. The integrated solid-liquid separation device for landfill leachate treatment according to claim 2, characterized in that: The extrusion mechanism (300) comprises a hydraulic cylinder (301), the non-output end of the hydraulic cylinder (301) is fixedly connected with the supporting block (100); the output end of the hydraulic cylinder (301) is fixedly connected with a rack (302), the surface of the rack (302) is fixedly connected with a fixed block (303), the surface of the fixed block (303) is attached with a sleeve (304), the inside of the sleeve (304) is slidably connected with a first steel wire rope (305), one end of the first steel wire rope (305) is fixedly connected with a baffle (306), the baffle (306) is slidably connected with the disc (200), the surface of the first steel wire rope (305) is attached with a first deflection wheel (307), the first deflection wheel (307) is rotationally connected with the disc (200), one end of the first steel wire rope (305) is fixedly connected with a first sliding block (308), and the first sliding block (308) is slidably connected with the disc (200).

4. The integrated solid-liquid separation device for landfill leachate treatment according to claim 3, characterized in that: The extrusion mechanism (300) further comprises a first filter plate (309), one end of the first sliding block (308) is fixedly connected with the first filter plate (309), one end of the first filter plate (309) is fixedly connected with a rotating rod (310), the rotating rod (310) is elastically rotationally connected with the disc (200) through a torsional spring, and the surface of the first filter plate (309) is fixedly connected with a rubber block (311).

5. The integrated solid-liquid separation device for landfill leachate treatment according to claim 4, characterized in that: The expansion mechanism (400) includes a first movable plate (401), the first movable plate (401) is fixedly connected with the baffle (306), the surface of the first movable plate (401) is fixedly connected with a first connecting block (402), one end of the first connecting block (402) is fixedly connected with a pull spring (403), the upper end of the pull spring (403) is fixedly connected with a second steel wire rope (404), the surface of the second steel wire rope (404) is attached with a second deflection wheel (405), one end of the second steel wire rope (404) is fixedly connected with a second sliding block (406), the surface of the second sliding block (406) is attached with a second connecting block (407).

6. The integrated solid-liquid separation device for landfill leachate treatment according to claim 5, characterized in that: The expansion mechanism (400) includes a second filter plate (408), one end of the second connecting block (407) is fixedly connected with the second filter plate (408), the second filter plate (408) is slidably connected with the first filter plate (309) through a spring, and the second filter plate (408) is closely attached to the first filter plate (309).

7. The integrated solid-liquid separation device for landfill leachate treatment according to claim 6, characterized in that: The dredging mechanism (500) includes a bellows (501), the upper end of the bellows (501) is fixedly connected with the first movable plate (401), the upper end of the bellows (501) is fixedly connected with an air inlet pipe (502), the inside of the air inlet pipe (502) is provided with a first check valve (503), the lower end of the bellows (501) is fixedly connected with a fixed plate (504), the lower end of the bellows (501) is fixedly connected with an air outlet pipe (505), and the inside of the air outlet pipe (505) is fixedly connected with a second check valve (506).

8. The integrated solid-liquid separation device for landfill leachate treatment according to claim 7, characterized in that: The filtering mechanism (600) includes a pressing plate (601), the pressing plate (601) is closely attached to the second filter plate (408), the upper end of the pressing plate (601) is fixedly connected with an arc plate (602), the upper end of the pressing plate (601) is fixedly connected with a protruding block (603), and the lower end of the pressing plate (601) is fixedly connected with a third sliding block (604).

9. The integrated solid-liquid separation device for landfill leachate treatment according to claim 8, characterized in that: The filtering mechanism (600) further includes a second movable plate (605), the lower end of the third sliding block (604) is fixedly connected with the second movable plate (605), the upper end of the second movable plate (605) is fixedly connected with a top rod (606), and the second movable plate (605) is sleeved with a water outlet pipe (607) outside.

10. The integrated solid-liquid separation device for landfill leachate treatment according to claim 9, characterized in that: The deslagging mechanism (700) includes a ratchet wheel (701), the ratchet wheel (701) is engaged with the rack (302), one end of the ratchet wheel (701) is engaged with a ratchet pawl (702), and the ratchet pawl (702) is elastically connected with the supporting block (100) through a torsional spring.

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